New motor

[cupracing]

yes, i used YGE gov store. What timing would you recommend?

[666yeti666]

timing is always a matter of trying, but do it in small steps to prevent failures (though YGE is very reliable), or motor overheating.
I don't know exact rules for timing. Some say 2 .. 2.5 number of motor poles, but this can be totally BS, since it depends on many more factors .....

Seb

[myrseth]

I thought yge had auto timing?

From my tests the 7hv holds headspeed as good as the 6hv with the sz motor. Getting it fly like a monster on crack you tweak agility speed and rpm on main rotor.

ATM I run 1850 and 1950 at 14 pitch and have pretty constant rpm even at full climb outs. And I can tell its more powerfull then the old for the fact that the tail precomp need serious tweaking full climb out tail moves 40 degrees hehe. When I get a better esc I will be living at 2050 and 2150 with lower pitch to get my prefered snappiness in tic tocs and other maneuvers since I don't have an alternative I prefer of 710 blades. My current setup would be awsome with 710s

[666yeti666]

Originally Posted by myrseth

I thought yge had auto timing?

From my tests the 7hv holds headspeed as good as the 6hv with the sz motor. Getting it fly like a monster on crack you tweak agility speed and rpm on main rotor.

ATM I run 1850 and 1950 at 14 pitch and have pretty constant rpm even at full climb outs. And I can tell its more powerfull then the old for the fact that the tail precomp need serious tweaking full climb out tail moves 40 degrees hehe. When I get a better esc I will be living at 2050 and 2150 with lower pitch to get my prefered snappiness in tic tocs and other maneuvers since I don't have an alternative I prefer of 710 blades. My current setup would be awsome with 710s

yge has both, auto timing or set by hand : http://www.yge.de/artikel.php?search=yge120hvk

Myrseth, which ESC do you use and what pinion ?

seb

[EricW]

I now use fixed timing ( 18 - 8 ) on the YGE120 (still on the scorpion 560).
The combination of 710 blades and autotiming can be a pain with lower headspeeds and e.g. 14º pitch.
Tried it myself once, resulted is thermal cut-off at full FF, not nice!!
At the moment i'm testing new Gryphon 700 mm blades, once those are released you will have all the pop you need, they rock

[Rob43]

Originally Posted by EricW

Stock pinion is 13T.
Governed headspeed below 2000 i'd go for a 14T in combination with this motor.
Above 2000 (my goal) i think a 15T is best.
Correct me if I'm wrong.

+1. That's a fair statement. I've run 13, 14, 15 on mine. The 14 is also nice for a setup where lower and higher speeds are desired in one setup. The 15t certainly places the headspeeds above 2000 where the ESC has headroom. Jive seemed happy pushing it at 65%, 15t, 2050 rpm, Mode 4. I was, however, running 13 pitch. I think 13.5 might be ideal at those settings.

[myrseth]

Seb im using hobbywing 120hv with 14t, i will go for yge 160 later When i tested this combo well so i have the 14s option later if i want.

13t is the old kit standard, new is 14t and yes 1950 is max governed 14t more needs 15t.

Compass 700 blades are great for more reasons then pop and crazy bite, they actually play nice around center stick too which seem to be a very seldom combo and why I have not yet found an alternative for equal or bigger blades, 690 just is not an alternative as I want the gyroscopic effect from the bigger blades since agility isn't an issue at all with 700 blades I can't really see a valid reason to go for 690s. I was talking about the feel of the rpm. Is the feel I want, as I prefer 13 pitch flying I need bigger hs to get the power I'm used to as 14 just don't feel right for me.

[Jamesppp]

The kit w/motor and blades thy I got last week came with a 13t pinion. My motor finish is the opposite of the pic in the first post. The fan and the base look almost chrome plated and the can is silver with gloss clear coat

My motor wires are less than an inch long. Is this normal?
Jimmy

[richardmills]

My 1 week old kit motor is all shiny with short cables

[premme]

Hi Guy's,

i'm new here and just build my first 7HV.
I got the new shiny motor also and going to use the HW 120HV.
Is PWM 8 and timming 18 good for this setup?
An how should i set the governor?

Al your help is welcome.

Thx,

Premme

[myrseth]

I suggest testing 12khz 15 degrees in the start, and experimenr with the 11 degrees setup.

14t will be the new kit standard as its etats needed for 1950 rpm gov.

[faasss]

hi all, can i ask how can we calculate our rpm. As currently i'm using the scorpion 130 OPTO. Running at flat throttle at 75 idle with 15t pinion. Would it be too high or low rpm currently my 7hv is running?

[OverTemp]

http://www.readyheli.com/headspeed-calculator.html

[uragano47812]

I'm using YGE120HV with Vbar gov.

Before i had the 700MX 530kv with 12khz pwm and 18° timing. The motor was running well and came down only a little warm (like cold). Using stock 13T.

Now with the new motor 4926 i'm using the same setup i have only change the pwm to 8khz, because in the motor box is write drive frequency: 8khz.

Well the motor is running a lot hotter than 700mx and with little more power. I have 4000mah nanotech 45-90C that are not running really well even if they are quite new.

In your opinion is it better to run 12khz (from pwm calc it has 11,73) for heat and a longer pinion for power?

My HS are 1700-1800-1950.

[belcom]

Originally Posted by uragano47812

Well the motor is running a lot hotter than 700mx and with little more power.

A little? I am running YGE at 8Khz and 18 timing and it has gobs of power with new motor. It's not cold but not really hot either.

Originally Posted by uragano47812

I have 4000mah nanotech 45-90C that are not running really well even if they are quite new

Nano-techs are probably among the worst batteries. 50-60 cycles and they start to sag so bad under load. If you had overdischarged it at least once down to 10% or less that'll kill a new Nano-tech too and all power is gone.

[Azlum]

I got to try out my new motor yesterday and it was coming down REALLY hot after a 4min flight of soft 3d at 2000rpm. I'm running auto timing on the Scorpion ESC. I will have to mess with the timing and see if I can get the temps down.

I didn't have my IR temp gun with me but I'm guessing it was coming down between 180-200f.

[belcom]

Originally Posted by Azlum

I got to try out my new motor yesterday and it was coming down REALLY hot after a 4min flight of soft 3d at 2000rpm. I'm running auto timing on the Scorpion ESC. I will have to mess with the timing and see if I can get the temps down.

I didn't have my IR temp gun with me but I'm guessing it was coming down between 180-200f.

Good idea to try out different settings. I can hold my hand on the motor after 5:30 flight of some mixed sport and non-technical random 3d at 2000 governed and 13 pitch.

[alexmit]

Originally Posted by uragano47812

In your opinion is it better to run 12khz (from pwm calc it has 11,73) for heat and a longer pinion for power?

My HS are 1700-1800-1950.

I read in another thread that the PWM/Timing calculation math that's been bouncing around in all these forums isn't foolproof. The person that claimed the math can be faulty is a guy associated with powercroco. He's extremely knowledgable, so I tend to believe him. Maybe the math isn't a bad starting point, but tweaking for better results probably isn't a bad idea either. Another issue it would seem is that different ESC manufacturers sometimes use different numbers (not necessarily a standardized baseline) for timing and PWM. So that can be a factor as well.

[lazor 22]

Mine feels like it is running hot too but when I temped it was reading 130 after flight (with canopy on, 120 or so without). This is after a 3:30 flight not letting up on it

[cupracing]

Mines really hot too, I really need more power though. Can I go up to 16t on this machine?